Worked Examples For The Design of Steel Structures.pdf

Building Research Establishment

The Steel Construction Institute

ciisf6 (28)H :h2(A3)( Z( 4))

1994

and

Ove Arup & Partners

Worked examples for the

design of steel structures

ARUP

The Building Research Establishment, BRE, is the principal organisation in the

United Kingdom carrying out research into building and construction and the

prevention and control of fire. Its main role is to advise and carry out research for

the Department of the Environment and other Government Departments on

technical aspects of building and other forms of construction, all aspects of fire, and

environmental issues related to buildings.

The Steel Construction Institute, SCI, aims to promote the proper and effective use of

steel in construction. Membership is open to organisations and individuals concerned

with the use of steel in construction. The SCI is financed by subscriptions from

members, by revenue from research contracts, consultancy services and sales of

publications. Further information is given in the SCI prospectus, free on request from the

Membership and Council Secretary, The SCI, Silwood Park, Ascot, Berkshire, SL5 7QN.

Ove Arup & Partners is an international firm offering a wide range of design and

specialist services for the construction industry.

Although care has been taken to ensure that all data and informationcontained in this

book are accurate to the extent that they relate to either matters of fact or accepted

practice or matters of opinion at the time of publication, The Steel Construction Institute

and the authors assume no responsibilityfor any errors in or misinterpretationof such

data and/or information, or any loss or damage arising from or related to their use.

Building Research Establishment

The Steel Construction Institute

and

Ove Arup & Partners

Worked examples for the design of

steel structures

Based on

BSI publication DD ENV 1993-1 -1 : 1992.

Eurocode 3: Design of steel structures

Part 1 .I General rules and rules for buildings

(together with United Kingdom National Application

Document)

Building Research Establishment

Garston

Watford

WD2 7JR

The Steel Construction Institute

Silwood Park

Ascot, Berkshire

SL5 7QN

Ove Arup & Partners

13 Fitzroy Street

London

W1 P 6BQ

Prices for all available

BRE publications can be

obtained from:

BRE Bookshop

Building Research Establishment

Garston, Watford, WD2 7JR

Telephone: 0923 664444

Fax: 0923 664400

Further information on SCl Publications

may be obtained from:

The Publications Department

The Steel Construction Institute

Silwood Park, Ascot

Berkshire, SL5 7QN

Telephone: 0344 23345

Fax: 0344 22944

Cover photograph

British Pavilion at Expo 92, Seville, Spain.

Photo by courtesy of Jo Reid and John Peck

Architects: Nicholas Grinishaw & Piirtners

BR 242

SCI-P-122

BRE ISBN 0 85125 563 9

SCI lSBN 1 870004 87 6

0 SCI 1994

First published 1994

Applications to reproduce extracts

from the text of this publication

should be made to the Publications Manager

at the Building Rcsearch Establishmcnt.

Contents

Page

Foreword

Introduction

Example 1

Design of a 5-storey braced frame

1.1 Frame geometry

1.2 Loading

1.3 Fully restrained beam (B1)

1.4 Beam restrained at load points (B2)

1.5 Unrestrained beam (B3)

1.6 Plate girder (B4)

1.7 Column (Cl)

1.8 General requirements for structural integrity

1.9 Beam-to-beam connection (Bl-B2)

1.10 Beam-to-column connection (B2-C2)

1.11 Column splice (C2-C3)

1.12 Column base-plate (C3)

Example 2

Design of continuous multi-storey frames

2.1 Frame geometry, loading and analysis

2.2 Beam design

2.3 Column design

2.4 Design procedure using the concise document (C-EC3)

Example 3

Design of a 30 m span roof truss

3.1 Truss geometry, loading and analysis

3.2 Design using angles and tees

3.3 Design using circular hollow sections

106

Example 4

Design of a gantry girder to support a 100 kN capacity crane

4.1 Girder geometry, loading and analysis

4.2 Cross-sectional properties

4.3 Strength check

4.4 Buckling resistance

4.5 Web resistance

4.6 Deflection check

4.7 Design procedure using the concise document (C-EC3)

118

123

126

129

133

135

136

Example 5

Stiffened base-plate

5.1 Initial design information

5.2 Strength check in accordance with Annex L

5.3 Design procedure using the concise document (C-EC3)

137

138

147

Example 6

Beam splice

6.1 Initial design information

6.2 Web splice

6.3 Flange splice

6.4 Design procedure using the concise document (C-EC3)

148

149

153

155

References

156

...

111

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